Sofa



FIG. 1 is a perspective view of the sofa comprising our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a rear elevational view thereof; and,

FIG. 7 is a front elevational view of a second embodiment of a sofa,portions of which are cut away to illustrate indeterminate length whichis the sole difference between it and FIGS. 1-6.

The broken lines showing backrest pillows and base members are forillustrative purposes only and form no part of the claimed design.

The bottom forms no part of the claimed design.

The ornamental design for a sofa, as shown and described.